All categories

3 years ago

Explain why solar energy is considered an inexhaustible source of energy

Chemistry

2 answers:

anyanavicka [17]3 years ago

5 0

Answer:

Solar power :)

Explanation:

scoray [572]3 years ago

3 0

Answer:

Solar power

Or in some cases, from heat from the sun. ... Solar energy is a renewable free source of energy that is sustainable and totally inexhaustible, unlike fossil fuels that are finite. It is also a non-polluting source of energy and it does not emit any greenhouse gases when producing electricity.

Explanation:

You might be interested in

How do forces in nuclear and chemical reactions differ

marusya05 [52]

1) Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei. ... (3) Rates of chemical reactions are influenced by temperature and catalysts.

8 0

3 years ago

Read 2 more answers

Under certain conditions, neon (Ne) gas diffuses at a rate of 4.5 centimeters per second. Under the same conditions, an unknown

Eva8 [605]

Mv^2 = const
m ~ 1/v^2 

(4.5/10.1)^2 = 0.198 

20.2 * 0.198 = 4.0 g/mol (Helium)

6 0

4 years ago

Read 2 more answers

1. Explain how groups 1A-8A in the periodic table are organized by their number of valence electrons.

nirvana33 [79]

Explanation:

1. Explain how groups 1A-8A in the periodic table are organized by their number of valence electrons.

The valence electrons in an atom are the outermost shell electrons. They are the most loosely held electrons in an atom.

Coincidentally, the periodic table of elements divided into vertical groups and horizontal periods can be said to be arranged according to the number of valence electrons.

Atomic numbers are used to arrange elements on the periodic table.
Down a group, the number of electronic shell increases. More electrons are added to new energy levels.
As we move from left to right across a period, the number of electrons in elements increases but electronic shell is the same.
Down a group electronic shell increases but the number of valence electrons are the same.
All elements in Group 1A has just one valence electrons, Group 2A has two valence electrons.........Group 8A has eight valence electrons.
Moving across groups is synonymous to moving from left to right on the periodic table.
Due to this trend, the periodic table is arranged based on the number of valence electrons.

3. explain how you know the number of valence electrons for each group.

The number of valence electrons in a group is the group number:

Group Number valence electrons

1A 1

2A 2

3A 3

4A 4

5A 5

6A 6

7A 7

8A 8

learn more:

Periodic table brainly.com/question/1971327

#learnwithBrainly

6 0

4 years ago

In an aqueous solution, 42% of a substance dissociates to release hydronium ions. Which of the following statements is true for

const2013 [10]

Answer: The statement it is a weak acid is true for the substance.

Explanation:

An acid that dissociates completely when dissolved in water to give hydrogen $(H^{+})$ or hydronium $(H_{3}O^{+})$ ions is called a strong acid.

For example, HCl is a strong acid.

$HCl + H_{2}O \rightarrow H_{3}O^{+} + Cl^{-}$

An acid that dissociates partially or weakly when dissolved in water to given hydrogen or hydronium ions is called a weak acid.

For example, $CH_{3}COOH$ is a weak acid.

$CH_{3}COOH \rightleftharpoons CH_{3}COO^{-} + H_{3}O^{+}$

A strong base is a base which when dissolved in water then it dissociates completely to give hydroxide ions.

For example, NaOH is a strong acid.

A weak base is a base which when dissolved in water then it dissociates partially or weakly to give hydroxide ions.

For example, $NH_{3}$ is a weak base.

Hence, in an aqueous solution where 42% of a substance dissociates to release hydronium ions shows that the dissociation is less than 50%. This means that substance is dissociating weakly so, it is a weak acid.

Thus, we can conclude that the statement it is a weak acid is true for the substance.

5 0

3 years ago

How does a heat affect the chemical reaction?

patriot [66]

Answer:

Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

Explanation:

6 0

3 years ago

Read 2 more answers